Principal Research & Engineering, Realtime Voice AI
Inflection AI
Palo Alto, CA · Posted June 29, 2026
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Where Palo Alto, CA ranks
Where Palo Alto, CA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #3Best cities for entry-level jobs that want AI skills28% · of 100
- #3Best cities for entry-level jobs that want AI skills in the West Coast28% · of 54
- #3Best cities for AI-skill jobs37% · of 100
- #3Best cities for AI-skill jobs in the West Coast37% · of 71
- #4Best cities for data and analytics pay after cost of living$207k · of 28
- #4Best all-round cities for mid-career professionals83 / 100 · of 100
Rankings about data & analytics jobs
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- Employers with the most data and analytics jobs #1 Amazon (711 roles)
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How AI is used in this kind of work
AI use among architectural and engineering managers is little observed so far. Measured exposure for architectural and engineering managers: 3% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
About the job
About Inflection AI
Inflection AI is a Public Benefit Corporation empowering people with human-centered, emotionally intelligent AI. We’re shaping the future of AI by combining emotional intelligence (EQ) and raw intelligence (IQ) to elevate people’s potential.
Inflection AI created Pi, the world’s first emotionally intelligent AI, to help people work through decisions, emotions, and challenges. Pi is a personal AI agent powered by Inflection AI’s foundation model, proving that AI can be personal, empathetic, and contextually aware.
About the Role
Voice is becoming the highest-stakes interface for AI, where quality depends on speed, naturalness, interruption handling, emotional nuance, and reliability in real-world conditions. We are looking for a hands-on technical leader to define and build Inflection’s realtime Voice AI stack across speech models, streaming systems, voice-agent runtime, and evaluation. This person will help shape how emotionally intelligent AI shows up in spoken interactions, partnering across research, engineering, product, and design to deliver voice agents that feel responsive, trustworthy, and useful in enterprise settings.
What You’ll Do
Establish the technical roadmap for Inflection's realtime Voice AI stack, encompassing streaming ASR, TTS, speech-to-speech, speech LLMs, turn-taking, barge-in, latency, and reliability.
Utilize a 1,000 GPU cluster to support performance benchmarking and extensive experimentation.
Determine build-vs-buy-vs-train strategies for core audio, speech, and realtime interaction components.
Direct research and engineering efforts focused on speech quality, naturalness, expressiveness, emotional fit, controllability, and production readiness.
Collaborate with infrastructure, product, design, and agentic AI teams to deploy voice agents for enterprise workflows.
Develop evaluation systems measuring voice quality through metrics such as clarity, emotional appropriateness, interruption handling, task success, user preference, latency, and reliability, moving beyond standard WER.
Refine production voice behavior by debugging across runtime, model, evaluation, data, and product layers.
Mentor, and Coach a team specializing in speech research, audio infrastructure, realtime systems, and evaluation.
What We’re Looking For
Experience leading or serving as a principal Research and Engineering contributor to realtime voice, speech, audio AI, or conversational AI systems in production.
Experience with one or more of: streaming ASR, TTS, speech-to-speech systems, speech LLMs, audio tokenization, multimodal models, barge-in, low-latency inference, or realtime agents.
Strong technical judgment across both speech modeling and production systems.
Ability to define voice quality in terms of user and customer outcomes, not only offline model metrics.
Experience designing or using evaluation systems that capture real user experience.
Strong product intuition for natural, trustworthy, emotionally appropriate voice interactions.
Ability to lead senior technical talent while staying close to the code, architecture, and debugging work.
Have a bachelor’s degree or equivalent in a related field to the offered position requirements
Employee Pay Disclosures
At Inflection AI, we aim to attract and retain the best employees and compensate them in a way that appropriately and fairly values their individual contributions to the company. For this role, Inflection AI estimates a starting annual base salary to fall within the range of $400,000 to $550,000 , depending on a candidate’s qualifications and level of experience. This role also includes a meaningful equity component, allowing employees to share in the long-term success of the company.
Benefits
Inflection AI values and supports our team’s mental, emotional, financial and physical health. We are focused on building a positive, safe, inclusive and inspiring place to work. Our benefits include:
Robust medical, dental and vision options with employer contributions for HSA, FSA and DFSA
401k matching program
Flexible Time Off, 10 paid holidays, 5 days sick leave
Parental, Medical and Family care leave
Generous cell-phone, wellness and office set up stipends
Support of country-specific visa needs for international employees living in the Bay Area